<p>添加购物车</p>
<form action="/order/add" method=POST>
   <input name="user_uuid" type="text" placeholder="user_uuid">
   <input name="product_uuid" type="text" placeholder="product_uuid">
   <input type="submit" value="add">
</form>

<p>删除购物车商品</p>
<form action="/order/del" method=POST>
   <input name="order_id" type="text" placeholder="order_id">
   <input type="submit" value="delete">
</form>
